Bottle cooling and dispensing refrigerator



Ffih 7,, HO MUFFLY A9 BOTTLE COOLING AND DISPENSING REFRIGERATOR FiledMay 2, 1944 2 Sheets-Sheet l 7 INVENTOR. 62%? Ma #1 52 fi 7 To ENE V6.

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BOTTLE COOLING AND DISPENSING REFRIGERATOR 2 Sheets-Sheet 2 Filed May 2,1944 75 1Q 52 /75 270 up M w; l Z z i Patented Feb. 7, 1950 BOTTLECOOLING AND DISPENSING REFRIGERATOR Glenn Muflly, Springfield, OhioApplication May 2, 1944, Serial No. 533,778

Claims.

This application is a continuation in part of my co-pending application,Serial Number 324,466, filed March 18, 1M0, now abandoned. The inventionrelates to refrigerating mechanism and particularly to the applicationof a refrigerating system to bottle coolers, and in general to the typeof apparatus used for cooling foods and drinks in containers.

The ice making principle and control methods covered in my issuedPatents Nos. 2,145,773, 2,145,774, 2,145,775, and 2,145,777, areemployed herein and reference is made to these issued patents, todivisions thereof and to my pending application, Serial Number 237,629,filed October 29, 1938, now Patent No. 2,359,780, dated Oct. 10. 1944,for more complete discriptions of certain ice making and controlfeatures mentioned in the present application.

An object of this invention is to provide a bottled beverage cooler withan emergency capacity beyond that of the refrigerating machine whichcools it, such excess capacity being available for quickly cooling 3.large number of bottles which may be put into the cooler at one time.

Another object of this invention is to provide means for making thecooling effect of an accumulated supply of ice quickly available forhandling the peak loads above mentioned.

Another object of this invention is to provide means for storing a largesupply of ice in small pieces for the COOIll'lg of bottled beverages orother products without allowing such ice to interfere with the placingof bottles or other containers in the cabinet.

Still another object is to provide means for circulating water throughthe stored ice, then into heat exchange with the containers to be cooledand then baclr through the ice to provide rapid heat transfer from suchcontainers to the ice.

A further object is to provide thermostatic control means for the watercirculating means that provides this rapid heat transfer.

Another object is to provide a sectional type of bottle cooler adaptedfor use in multiple to vend various flavors or varieties of drinks andaccommodate a maximum stock of goods in a minimum of floor area.

An additional object is to provide a dry compartment for storage ofproducts to be cooled and at the same time to retain the holdover effectof the floating ice.

Still another object is to provide means for drying containers afterthey have been wetted in cooling.

An additional object is to provide coin actuated vendin means for thesale of the products cooled, this means being operable either manuallyor by power means.

Another object is to provide means for coolins the chutes on whichcontainers are stored.

With these and other objects in view, I describe my invention byreferring to the drawings, in which similar reference characters referto similar parts.

Figure 1 is a diagram of the refrigerating system and thermostaticcontrols adapted for use in connection with the other figures.

Figure 2 is a vertical sectional view of a bottle cooler, showinggravity and power means for moving bottles into and out of the coolinzone, which may be either wet or dry, and further showing a coinactuated, power driven vending mechanism.

Figure 3 is a vertical section of Fig. 2, taken on the line il--tthereof.

Figure 4 is a vertical sectional view of a modifled form of the coolershown in Fig. 2, illustrating a manually operated vending mechanism.

Referring to Fig. l, the motor-compressor unit it draws vaporizedrefrigerant from the tube it and delivers compressed vapor through thetube ii to the condenser it, from which the liquefied refrigerant passesthrough the capillary tube M and the second capillary tube M, the latterbeing preferably embedded in the insulation and leading to the coils Miland Hi seen in Fig. 2.

The fan is and its driving motor Ml are pro vided for cooling thecondenser it. A bulb Mi is located as in Fig. 2 for the purpose ofcontrolling the circulation of water and it is connected to athermostatic switch it to control the opera tion of the motor 52 in Fig.2. The result is that water is forced to flow through the ice and theninto heat exchange with or over the bottles to cool them. The wiringdiagram of Fig. 2 will be understood by referring to Fig. l.

The bulb 86, which is seen in Figs. 1 and 2, is connected with athermostatic switch t'l, (Fig. l.) to control the operation of the motorcompressor unit 76 and may have a starting circuit breaker 88 connectedwith it. Both the bulb t5 and the bulb 86 are located in the cabinet,but at different points to control different motors for differentpurposes. The bulb 46 and its switch it initiate water circulationwhenever it is required to lower the temperature of the bottles in theupper part of the cabinet. The bulb 86 and its switch 81 control thestarting and stopping of the refrigerating system, starting the systemwhen the supply of floating ice diminishes so that it does not contactthe bulb 86. The compressor then runs continuously while the evaporatorsH0 and I i I are alternately refrigerated, making and releasing iceuntil there has been accumulated an amount of floating ice such that thelower pieces of floating ice contact and partially surround the bulb 86to cool it down to the cut-out point of the Switch 81.

In Fig. 2 the evaporator coil IIII is shown associated with the bottomof the tank I16, while the evaporator coil III is associated with sidewalls of this same tank. Optionally, the coil III might be associatedwith one-half of the tank bottom and with the sides adjacent thereto,while the coil III is associated with the other half of the tank bottomand with the side walls adjacent to this other half. In either case theoperation is to refrigerate first the coil III! and then the coil II I,such alternate refrigeration being caused by alternately connecting thecoils with the suc tion tube Id of Fig. l. The valve mechanism 22,indicated in Fig. 1, is preferably of a type disclosed in one of myissued patents above mentioned, or it may, for example, be a mechanismsuch as is shown in Figs. 9, l and 11 of my copending application,Serial No. 237,629, filed October 29, 1938, now Patent No. 2,359,780,issued October 10, 1944.

This method of controlling the quantity of ice formed in a tank isexplained in my co-pending applications above mentioned. The bulb 86 maybe cooled down to the temperature of 32 F. by the floating ice whenthere is ice at and below its level, but when the ice supply is notsufiicient to reach downwardly to this bulb level, the temperature ofthe bulb will be higher than 32 F.

During idle periods of the motor 52 there will be a slow thermostaticcirculation of water in the tank due to the fact of water having areverse coeflicient of expansion between its freezing point and itsmaximum density temperature of 39.2 F. Water at any temperature between32 F. and 46A F. is heavier than 32 water of the same purity. The watersurrounding the bottles in Fig. 2 may be at 40 F. while the waterimmediately below the perforated wall IlI (Fig. 2) and between the disksof ice must necessarily be at 32 F. Since 32 water is lighter than 40water there will be an upward circulation of the cold water from thebody of ice.

The bottle cooler shown in Fig. 2 is arranged for power driven deliveryof bottles, with a coin mechanism for starting the delivery mechanism.The cabinet I58 is. seen in vertical section, showing the rear wall I59and the front wall I613. The rear wall I59 may be placed against thewall of a room in which the cabinet is located and access is had to thecabinet at its front and top.

The lid I6I is designed to be locked so as to protect the stock, thecoin mechanism and the money that has been collected thereby. This lidis unlocked and lifted so that bottles 62 may be placed upon the chutesI62 and IE3. These bottles will roll over the series of such chutes andthe first one will come to rest at the extreme right 'of chute I64 onthe lift hook I11, which is attached to two chains I16. The shaftsupporting the sprockets I19 is preferably so located that as the idleposition is approached the hook I11 which is to receive the next bottlewill still be inclined downwardly a bit to provide a wider gap for thebottle to roll into place. This gap is reduced as the hook leaves thesprockets I19 to travel straight up. Upon operation of the chains in thedirection indicated by the arrows there will be a bottle on each of thehooks that are traveling in the upward direction and further movement ofthe chain will cause a bottle to roll out of the cabinet through theopening I80 onto the rack 224.

The chutes I63 and I64 are seen in more detail in Fig. 3 which is takenon the line 3-3 of Fig. 2. The chutes I62 and I63 are quite similar butof right and left hand as seen in Fig. 2. All of thesecabinet.

. I I chutes and the chute I66 are welded or otherwise attached to avertical wall I69, Fig. 3 forming an assembly which is suitablysupported in the There-may be any number of these assemblies, 'each withits own mechanical delivery mechanism, in the same cabinet. Ordinarilyeach such chute assembly and delivery mechanism is used for a difierentflavor or variety of bottled beverage and the cabinet may extend towhatever length is required, oflering a wide variety of drinks to thepublic so that a customer may drop a coin in whichever slot 2| I ismarked with the brand or flavor he desires.

Each of the chutes I62 and I63 is provided with a flange I65 for weldingto the wall I69 as a support and with an upturned outer flange I66,which is high enough to make contact with the .top of the cap of smallbottle such as 62, yet low enough to pass under the neck of a largerbottle such as 64. The lowermost chute I64 has a flange I66 in line withthe flanges I66 of the other chutes and is also provided with a higherflange I61 for limiting the horizontal movement of the longest bottleshandled by the device. This flange I61 is positioned angularly as seenin section in Fig. 3 for its entire length except that at its lower endit is bent to a vertical plane to allow the passage of the tube 230between it and the adjacent vertical wall I69 of the next chuteassembly. The inclined portion is to prevent bottle caps from resting onthe top of the flange when they drop from the next chute above and toalign the taller bottles as they approach the end of their travel on thechute I64, so as to prevent them from hitting the pipe 239. The chuteI64 also differs from chutes I62 and I63 in being provided with dripopenings I68. These holes are punched in the metal in a manner to drawit downwardly, forming a slight collar around each hole so that waterwill be distributed over the ice instead of all being delivered at theend of the chute I64. These holes I68 are not necessary in the eventthat the water level is maintained at I15, but are useful when the waterlevel is maintained below the perforated wall I1 I as indicated by thedotted line I15.

The lining of the cabinet I58 is in the form of a water-tight tank I10,the lower portion of which is equipped with evaporator coils H0 and I IIfor the making of ice as previously described. The tank is provided witha drain pipe 3I and valve 32. Below the bottle handling mechanism is aperforated wall I1I which serves to stop the upward flotation of ice aspreviously described in the event that water is placed in the tank up toa level higher than this wall. Some users may, however, prefer to keepthe level as shown at I 15' by the dotted line or lower, in which casethe shelf I1I could be omitted.

In any case the pump I13, driven by the motor 52, takes water from belowthe floating ice 8 and delivers it through pipe 51, the manifold 229,and the cooling coils 230 to discharge ports 23I. The cold water thuscirculated serves to cool the air within the cabinet and the contentsthereof, particularly those bottles which are located on the hooks I11of the chains I16, and the water further serves to cool the bottlessupported by the ice, thus insuring that the water passing upwardlythrough the pipe 5'! is not far above 32 F.

In the event that it is desired to cool the bottles entirely by aircontact without wetting them the coil 230 may be extended to providesufficient cooling surface for this purpose and instead of dischargingwater to now over the chutes the tube may be returned downwardly tobring the opening 23I below the level of the lowermost chute I84. Onemethod of extending the coil 230 to provide more cooling surface is byforming loops as indicated at 232, extending horizontally between thechutes or metallically attached to the bottoms of the chutes themselvesfor more direct cooling of the bottles or other containers which rollover the chutes. Another alternative arrangement would be to use thecoils 230 and 232 as the evaporator of a refrigerating system for directcooling of the bottles or other containers, but this would sacrifice theadvantage of the hold-over effect obtained through the use of floatingice and would necessitate a control setting to insure against freezingthe contents of bottles.

Delivery of bottles is accomplished by means of the chains IIt on whichare mounted a number of lift hooks Ill. The chains I are preferably usedin pairs, a pair for each of the cabinet sections designed to hold agiven flavor or variety of drink, each of the hooks I I1 being rigidlyattached to one link of each of a pair of chains. Thus there are twosprockets I18 at the top of the chains and the two sprockets H9 at thebottom of the chains for each section of the cabinet.

The normal idle position of the chains I10 is as seen in Fig. 2 or alittle lower, in position for a bottle to roll onto a hook II'I from thelower chute IISII. On the same shaft or sleeve with each pair ofsprockets I18 is a larger sprocket wheel I82 for the chain I88 which isdriven by the small sprocket I88. This small sprocket is mounted on thesame shaft with the driven gear I81. this gear being driven by thepinion I88 on the shaft of the motor I89. Arranged to rotate with thegear IBI is the cam I 90 having a notch I9I. The electrical circuit fordriving the motor I08 includes the wire i 90. going directly to themotor, and the line wire I95 leading to the screw IEII, which securesthe spring I98 to its insulating support 200. The spring I98 is arrangedso that it mav be caused to make contact with the contact 20L which iscarried by the insulating block 2B2 on the spring 203. which issupported at I89. Attached to or made a Dart of the spring 208 is thepawl 200, which is located for engagement with the cam I90.

When the cam I90 rotates in a clock-wise direction it engages the pawl208 and flexes the spring 208 until the contact 20I closes theelectrical circuit through the spring I98. Since the contact MI isconnected by means of wire 208 to the opposite pole of motor I89 themotor is thus energized to rotate the pinion I88, the gear I81, sprocketI88, chain I08, sprocket I82 and sprockets I78 which carry the chainsI18.

Springs 208 and I98 are so formed and located that the contact 2'" isnormallv spaced a bit from the spring I90, thus preventing the motor I89from being energized except when spring I90 or spring 208 is flexed bysome means. The starting of motor I89 is accomplished by flexing springI98 through the insertion of a coin 2 I0 in the slot 2i I. A coin soinserted passes down through the chute 2 I2 which is shaped to provide atortuous path to form a means of theft prevention. After the coin haspassed through such a theft prevention means such as the chute 224 ofFig. 4, it comes to rest between the spring I88 and the insulatedmovable wall member 2, which is retained in position by the connectingrod 2 I B joining it with the pawl 208.

As the coin comes to rest between the member 2 and the spring I it iswedged between them due to their small relative angle, flexing thespring I98 until it makes contact with 20I, thus starting the motor I88and moving the chains I18 in the direction indicated, at the same timerotating cam I until it lifts the pawl 204, flexing the spring 203. Theflexing of the spring 203 by the cam is sufficient to insure contact by20I on spring I98 in the unstressed position of the latter before thecoin is allowed to drop to the receptacle, 220. After the spring 203 hasbeen flexed enough to insure continuing of the contact between 20I andI98 the movable wall 2I4 will be moved to the right by connecting rod2I8 far enough to allow the coin 2I0 to drop into the coin receptacle220. The motor I89 continues to operate until the cam I90 has completedone full revolution, at which time the pawl 204 drops into the notch I9I, breaking the contact between I98 and MI and stopping the motor I89.

The duration of the motor operation after insertion of each coin is thusone revolution of the gear I87, cam I90 and sprocket I84. number ofteeth on sprocket I84 represents an angular movement of the sprocketsI82 and I18, equivalent to the space on chains I16 from one of the hooksII! to the next one, thus the stopping position of one hook will beidentical with the starting position of the hook next above and oneadditional bottle will have rolled from chute I84 onto a hook IT! andone bottle will have rolled from a hook I" onto the delivery rack 224,where it is accessible to the customer upon opening the door 223.

When there is a motor I09 and coin mechanism for each section of thecabinet the various coin receptacles 220 will provide a tally of the:number of bottles sold of each kind or flavor.

If desired, one or more of the cups 220 may be separately locked so thatthe coins received from sales of a certain flavor or variety of thedrinks may be retained for use in paying rental charges, to apply onelectric bills or for meeting time payments.

It will be noted that the bottle carriers I'I'I are designed so oneblocks the opening above the sprockets I70 at the idle position whileanother one blocks the opening between these sprockets and the frontinsulated wall I60 of the cabinet. It is possible to eliminate theinsulated door 223, which is shown closing the opening I80 by making thehooks III of insulating material with their bottoms or rear sides formedto replace the forked end I225 of rack 220. The insulated hooksreplacing I'II will, as in Fig. 2, be attached to both chains but willpass closer to the walls so that two of them act as doors at each idleposiion.

For the purpose of servicing the pump I13 or of cleaning the tank I10 itmay be desired to provide a hand hole closed by a gasketed cover 236,which is bolted in place and gasketed both to the tank I10 and to theouter wall of the cabinet.

This opening may be located in one of the end walls of the cabinet, orit may be dispensed with in case the handling mechanism is assembled ina unit structure which may be lifted out of the cabinet in its entirety,preferably carrying with it the insulated wall 222. The perforated wallThe 7 HI and the pump I13 would in this case be parts of the removableassembly, the pump I13 and motor 52 being connected by means of a jawclutch arrangement which is disconnected or engaged by merely liftingthe pump I13 or by replacing it.

Control of the refrigerating system to regulate the amount of iceproduced is obtained by means of the bulb 86 which is connected to theswitch 61 as seen in Fig. 1. Control of the pump H8 is by means of thebulb 46 and switch 45, also as shown in Fig. l.

The chain lift device may be manually operated after release of themechanism by means of a coin operated device if it is desired toeconomize on costs. In cases where a clerk is always in attendance toserve customers the coin mechanism may also be eliminated.

The enlarged sectional view seen in Fig. 4 shows a modification of thebottle delivery and coin operating mechanism seen in Fig. 2. In thismodified arrangement the power for turning the sprockets H8 is suppliedmanually by means of the lever 24!. This lever carries the coin chute243, including the return bend portion 244. A coin 210 is dropped intothe upper open end of the chute 243 and comes to rest in the positionshown, where it depresses the right hand end of the pawl 246 byoverbalancing the weighted end 241 of this pawl. The pivot 248 on whichthe pawl is supported is mounted near the lower end of the lever 2M,which lever has a bearing on the shaft 250.

Also bearing on the shaft 250 there are a plurality of sleeves 252, eachcarrying two sprockets I18 and a four-tooth ratchet wheel 254. Theweight of the coin 2m causes the pawl 246 to engage a notch in theratchet wheel 254, thus connecting the lever 24l with the sprocketwheels 3778 so that when the lever 24!] is moved forward and downward tothe position of 2% after coin has been inserted in the slot at the upperend of 253 the sprocket wheel will rotate to the right one quarter of aturn. This elevates one of the bottles 64 to a position directly abovethe shaft 250, where the bottle is free to roll to the right onto thedelivery rack 224. As the lever approaches the position 2M the coinfalls oil of the pawl 245 and is guided by the delivery guard 256 sothat it falls into the coin receptacle 258.

It is planned that there will be a plurality of bottle deliverymechanisms. Each includes a lever 2M with the associated coin mechanismand each lever will be marked to indicate the flavor or variety of drinkthat will be obtained by the operation of this lever. In this manner ahalf dozen or more varieties of drinks may be vended from one cabinet inwhich there are an equal number of bottle handling conveyors, or aplurality of narrow cabinets, each having a single pair of gravity andchain conveyors, may be placed together against a wall with a differentflavor of drink in each of the cabinets. Either with multiple mechanismsin one cabinet or with a lot of cabinets, each containing a singlemechanism, it is possible to vend a variety of different drinks from acabinet or cabinets occupying a relatively small floor space andaccommodating a large number of bottles.

As the lever 24! is pulled forward (to the right in Fig. 4) it carriesthe pin 260 and moves the connecting rod 262 to the right. This rod ispivoted at 263 so that the movement of the lever causes the door 264 toopen, allowing free passage for the bottle 64 which is to be delivered.After 244 and the guard 269 '75 positions.

delivery of the bottle the lever 2 is returned by means of the spring266, which is anchored at one end of the cabinet and attached at itsopposite end to lever 24!. The lever 24l comes to rest a bit to the leftof its vertical position against the end of the slot 268, which isprovided in the cabinet wall beyond the opening for door 264. At thevertical position of lever 24! the pawl 246 is ready for engagement withthe next notch of ratchet wheel 254 as soon as another coin is dropped.Should the lever 2 be moved without a coin having been dropped therewill be no movement of the ratchet wheel 254 because of the fact thatthe weighted end 241 holds the pawl out of engagement with the ratchetwheel. To prevent reverse movement of the ratchet wheel 254, sleeve 252and the sprocket wheels I18, pawl 216 is mounted on a fixed pivot toengage a tooth of the ratchet wheel on its lowermost side. This pawl mayfor economy of production be a duplicate of the pawl 246, and theweighted end will move the point of the pawl into engagement with anotch in the ratchet wheel.

A sheet metal guard 212 is provided to separate the door opening throughwhich bottles are delivered from the coin mechanism. This guard is shownbroken away to disclose the coin mechanism. In practice it surrounds theshaft 250 and is formed with one of the slideways on which the coindrawer 251 slides. The shield 212 is at the right (far side) of eachdoor 254 and a similar shield 214 is located at the left (near side) ofthe door opening, thus protecting the coin mechanism from the dooropening at each side. Each of these shields 214 is formed with an angleat the bottom which provides one half of the slideway for the drawer258. The guard 212 is provided with an arcuate slot 213 to accommodatethe movement of pin 260. The slotted guard 212 as shown would have abearing on the outside diameter of the sleeve 252, but the guard 214which is located beyond the coin mechanism may support the shaft 250directly. Since this shaft is not required to rotate there need be nobearing between the shaft and its supporting guard 214.

As a further means of theft prevention a semicircular strap of metal 269may be attached to the lever 24! in position to close the slot 268 atall positions of the lever. The coin receptacle 258 is of such form andlocation as to allow a free passage for the lower end of-the guard 269when the lever is brought down to its lowermost position.

In order to allow passage for the bottle carriers I11, the delivery rackis slotted as indicated at 225 forming fingers or prongs extending nearenough to the chains I15 so that the bottles as they roll oif of thecarriers will continue to roll onto the delivery rack 224 and will cometo rest beyond the door opening in a position to clear the extremity ofthe door 264.

The coin receptacles are made accessible by means of small doors 259which are arranged to be locked. The receptacle 258 is located betweenguards 212 and 214 and slidingly supported by them in line with the door259. The section of cabinet wall seen in Fig. 4 is not all in. oneplane, as the doors 259 are disposed in line with coin mechanisms whiledoors 264 are located between and above the doors 259 in line with thebottle delivery mechanisms.

The coin box 258 is so shaped and supported that there is clearance forthe coin chute bend in their lowermost en ear The cabinet, of which onlya part is seen in Fig. 4, is similar to I58 01 Fig. 2 and is equippedwith the same cooling means and chutes ior bottles. A portion of thecoil its is seen in Fig. 4.

Formal changes may be made in the specific embodiments of the inventiondescribed without departing from the spirit or substance of the broadinvention, the scope of which is commensurate with the appended claims.

What I claim as new and desire to secure by United States Letters Patentis:

i. In a refrigerator adapted for the cooling oi containers, conveyormeans for said containers comprising superimposed inclined chutes overwhich said containers pass in succession by gravity feed, fluidcirculating means for delivering cold liquid so that it flows in heatexchange relationship with said containers first on one oi said chutesand then on another of said chutes, and means for cooling said liquid byfreezing a portion of it and circulating the unfrozen portion of saidliquid in contact with said frozen portion thereof.

2. In. a refrigerator, means for making ice in one portion thereof,means for circulating liquid into and out of contact with said ice andinto cooling relationship with respect to a body to be cooled in anotherportion of said refrigerator, control means for said circulating meansresponsive to temperature changes of said refrig erator, and controlmeans responsive to variations in the accumulated quantity of said iceto regulate said ice making means.

3. In a refrigerator for cooling a packaged product, an opening forloading said refrigerator with packages, on opening for delivery of saidpackages after cooling, conveying means for moving said packages step bystep from the first to the second of said openings, means for coolingsaid packages during an intermediate portion their travel on saidconveying means, the last said means including means for making ice andfor circulating a fluid into heat exchange with said ice and with saidpackages, and control means for regulating the production of said ice tomaintain the reserve supply of ice within minimum and maximum limits.

4. In a cooling and vending apparatus, a cabinet for storage ofmerchandise in original containers, gravity chute means with repeatedreversals of inclination for receiving and storing said merchandise,means for cooling said merchandise by forcibly circulating a coolant inheat exchange with said containers and said chute operating saidelevating means to lift containers for the purpose of vending them and acoin operated device for actuating the last said means.

5. In a refrigerator, a cabinet comprising a storage space for a productto be cooled and a reservoir for ice and water, means for making ice andstoring it in flotation in the liquid from which ice is formed, meansfor circulating said liquid to and from said product storage space andthrough the floating ice for the purpose of cooling said product, andthermostatic control means for said circulating means.

6. In a bottle cooler, a tank having a space adapted to contain waterand ice, means for circulating water, a reticulated grid for confiningthe ice to said space, a conveyor adapted to carry bottles through saidliquid in a zone from which said ice is substantially excluded by saidgrid.

10 and ice-making means in said tank on the side of said grid where iceis stored.

7. In a refrigerator adapted for the cooling 0! bottles, means forrecirculating liquid in said said bottles during a Part of itscirculation, said recirculating means including means for supplying saidliquid to an upper one of said chutes, and said chutes being so arrangedthat the liquid drains from one to another of them.

8. In a refrigerator, a storage space for a product to be maintain thequantity of said ice within maximum and minimum limits and to regulatesaid circulating means.

9. In a refrigerator, 9. storage space for a product to me ns responsiveto variations in the quantity of ice in said second space for regulatingthe operation of said freezing means.

10. In a refrigerator,

GLENN MUFFLY.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PA'I'ENTS Number Name Date 504,589 Kaime Sept. 5, 1893882,858 Alexander Mar.24,1908 I 989.837 Cooper Apr. 18, 1911 1,004,998Crecelius Oct. 3, 1911 1,224,942 Lorentzen May 8, 1917 1,240,321Dickinson Sept. 18, 1917 1,442,953 Kehoe Jan. 23, 1923 1,457,300 CohenJune 5, 1923 (Other references on following page) Number Number 12 NameDate Martin Apr. 4, 1939 Hicks May 23, 1939 Slehrs Oct. 31, 1939 LandryJuly 30, 1940 Williams Feb. 25, 1941 Finnegan Apr. 1, 1941 Brock Sept.2, 1941 Hazard June 23, 1942 Elliott Sept. 15, 1942 Gibson et a1. Apr.6, 1943 Jennings June 13, 1944 Certificate of Correction Patent No.2,496,304 February 7, 1950 GLENN MUFFLY It is hereby certified thaterrors appear in the printed specification of the above numbered patentrequiring correction as follows:

Column 8, line 30, for coin drawer 257 read coin drawer 258; column 11,line 5, list of references cited, for Butter read Butler; line 8, forGoosman read Goosmmm;

and that the said Letters Patent should be read with these correctionstherein that the same may conform to the record of the case in thePatent Office.

Signed and sealed this 25th day of July, A. D. 1950.

[SEAL] THOMAS F. MURPHY,

Assistant Commissioner of Patents.

